EP0452985A3 - Imaging lidar systems and k-meters employing tunable and fixed frequency laser transmitters - Google Patents

Imaging lidar systems and k-meters employing tunable and fixed frequency laser transmitters Download PDF

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Publication number
EP0452985A3
EP0452985A3 EP19910110375 EP91110375A EP0452985A3 EP 0452985 A3 EP0452985 A3 EP 0452985A3 EP 19910110375 EP19910110375 EP 19910110375 EP 91110375 A EP91110375 A EP 91110375A EP 0452985 A3 EP0452985 A3 EP 0452985A3
Authority
EP
European Patent Office
Prior art keywords
fixed frequency
frequency laser
lidar systems
laser transmitters
imaging lidar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19910110375
Other versions
EP0452985A2 (en
Inventor
R. Norris Keeler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kaman Aerospace Corp
Original Assignee
Kaman Aerospace Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US07/632,398 external-priority patent/US5181135A/en
Priority claimed from US07/632,377 external-priority patent/US5091778A/en
Application filed by Kaman Aerospace Corp filed Critical Kaman Aerospace Corp
Publication of EP0452985A2 publication Critical patent/EP0452985A2/en
Publication of EP0452985A3 publication Critical patent/EP0452985A3/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
    • H04B13/02—Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/483—Details of pulse systems
    • G01S7/484—Transmitters
EP19910110375 1990-12-21 1991-06-24 Imaging lidar systems and k-meters employing tunable and fixed frequency laser transmitters Withdrawn EP0452985A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US07/632,398 US5181135A (en) 1990-12-21 1990-12-21 Optical underwater communications systems employing tunable and fixed frequency laser transmitters
US07/632,377 US5091778A (en) 1990-12-21 1990-12-21 Imaging lidar systems and K-meters employing tunable and fixed frequency laser transmitters
US632377 1990-12-21
US632398 1990-12-21

Publications (2)

Publication Number Publication Date
EP0452985A2 EP0452985A2 (en) 1991-10-23
EP0452985A3 true EP0452985A3 (en) 1993-05-19

Family

ID=27091616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910110375 Withdrawn EP0452985A3 (en) 1990-12-21 1991-06-24 Imaging lidar systems and k-meters employing tunable and fixed frequency laser transmitters

Country Status (1)

Country Link
EP (1) EP0452985A3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5257085A (en) * 1991-04-24 1993-10-26 Kaman Aerospace Corporation Spectrally dispersive imaging lidar system
US5192978A (en) * 1991-09-17 1993-03-09 Kaman Aerospace Corporation Apparatus and method for reducing solar noise in imaging lidar, underwater communications and lidar bathymetry systems
CN102608037B (en) * 2012-04-11 2013-12-04 哈尔滨工业大学（威海） Device and method for quickly measuring light attenuation coefficient
DE102019212608A1 (en) * 2019-08-22 2021-02-25 Robert Bosch Gmbh LIDAR system as an environmental sensor with two successive laser pulses
CN110954921B (en) * 2019-12-03 2022-01-04 浙江大学 Laser radar echo signal-to-noise ratio improving method based on block matching 3D collaborative filtering
CN111766568B (en) * 2020-07-09 2023-06-30 Oppo广东移动通信有限公司 Anti-interference method and device for time-of-flight ranging system and terminal equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788742A (en) * 1971-06-24 1974-01-29 Westinghouse Electric Corp Gas monitoring system
GB2158668A (en) * 1984-05-08 1985-11-13 British Aerospace Communications systems
US4707128A (en) * 1984-12-31 1987-11-17 Subsea Engineering Associates, Inc. Turbid media viewing system
US4829597A (en) * 1986-09-29 1989-05-09 The Aerospace Corporation Low solar background, high sensitivity active atomic resonance filter for underwater laser communications
WO1990000736A1 (en) * 1988-07-07 1990-01-25 Kaman Aerospace Corporation Method and apparatus for determining k factor and depth measurements

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788742A (en) * 1971-06-24 1974-01-29 Westinghouse Electric Corp Gas monitoring system
GB2158668A (en) * 1984-05-08 1985-11-13 British Aerospace Communications systems
US4707128A (en) * 1984-12-31 1987-11-17 Subsea Engineering Associates, Inc. Turbid media viewing system
US4829597A (en) * 1986-09-29 1989-05-09 The Aerospace Corporation Low solar background, high sensitivity active atomic resonance filter for underwater laser communications
WO1990000736A1 (en) * 1988-07-07 1990-01-25 Kaman Aerospace Corporation Method and apparatus for determining k factor and depth measurements

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
1977 INT CONFERENCE ON COMMUNICATIONS, vol. 2, 12 June 1977, CHICAGO, IL, USA; pages 21286-21290; LEE ET AL: "POINTING AND TRACKING THROUGH THE AIR-SEA INTERFACE FOR OPTICAL COMMUNICATIONS" *
ELECTRONICS. DE 1984 A 1985 : ELECTRONICS WEEK, vol. 47, no. 7, 4 April 1974, NEW YORK, US; pages 3E-4E: "LASERSCOPE OFFERS BETTER LOOK OVER AND UNDER THE SEA" *
JERLOV: "MARINE OPTICS", 1 January 1974, ELSEVIER SCIENTIFIC, AMSTERDAM, OXFORD, page 47, page 54, page 131, page 145. *

Also Published As

Publication number Publication date
EP0452985A2 (en) 1991-10-23

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